WA2ZKD
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- WA2ZKD
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Comments
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what are you using to power it? or it may just be updating......
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OK... I just noted that John's kiwi extension presents it as UTC so wasn't sure.
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Thanks for your efforts Tomasz... I have it all working now just fine with latest on my Linux system One question. My OS clock is set to EST so I used the --utc option and I get the correct time but GMT rather than UTC.. ?
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I am OK now... got fooled by git clone not grabbing the dev branch.... all good.
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when I try the kiwi_nc pipe to dumphfdl I get a broken pipe error. If I use kiwi_nc to create a file then use dumphfdl on the file, it works great.
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I did get kiwi_nc recorded IQ file to decode using dumphfdl !! Cleanup work to follow
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does tlimit not work in kiwi_nc ??
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thanks John... very helpful
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working with the hfdl in the kiwi webpage ui nspired me to look at using kiwiclient tools along with dumphfdl to get similar results without using a browser or loading the BB with demodulation etc. I asked Tomasz about adding SNR reporting and he i…
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I'm not sure where to find the kiwi's internal time, only the BB's and I'm not sure they are the same.
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would a control panel like this be enough? http://forum.kiwisdr.com/uploads/238/B7AN6UK90NQK.png
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here's a way to post a KML file... readers can open, cut/paste it back to txt and save that as kml http://forum.kiwisdr.com/uploads/513/VEM12CNHAZIM.pdf
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@jks re: SNR a quick look at the documentation shows that the GS calculates it and uses it to set the uplink data rate. I don't think the value gets set as data. The decoder in dumphfdl would have to calculate it. I use may limited skills to explor…
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Monitoring 11387 I see a few missed decodes but the waterfall shows them to be weak and laden with multi-path so perhaps that is the cause
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what freqs did you receive those on?
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Is the SNR something that the extension calculates? I believe that the HFDL stations themselves use it to determine best data rate
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GS-04 Riverhead NY https://www.google.com/maps/place/1370+Quogue+Riverhead+Rd,+Riverhead,+NY+11901/@40.881842,-72.6376316,422m/data=!3m1!1e3!4m5!3m4!1s0x89e8f492cf32dbab:0x6b9f994effb57dd0!8m2!3d40.882125!4d-72.63816
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this thought still applies...
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Powers levels should not exceed... Aircraft 400W peak Ground Station 6000W peak
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Having a flight number you can learn more here: https://www.flightera.net/en/search https://www.flightera.net/en/search
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If you monitor a freq. you'll see both uplink and downlink traffic giving you the opportunity to log reception of the ground stations and also the the aircraft themselves. Exciting! Ground station: http://forum.kiwisdr.com/uploads/088/TVEN0H434WKW.p…
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IQ is what works here!
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do the entries in dx.json need to be in any specific order?
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What is your budget and are you able to build circuitry etc.?
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your 6-way switch likely gives 60 dB of isolation. a 100W TX would be +50 dBm. So the signal at the Kiwi would be -10dBm, enough to "thump" it but not damage it. edited to correct 100W vs dBm error
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Please post a link to the article
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grounding that point is optional IMO and may even cause an increase in the noise floor.
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what type of antenna are you using?
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Here's what I have done in the past copy the JSON file from the BB.. then you have a few options hand edit the file convert the JSON to a more likeable format and massage it there, convert it back to JSON copy it back to the BB, and restart the kiw…
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that's not a trivial addition, even to a standalone BB. I have implemented that on RPi to have my own Stratum 1 ntpd here but I used a normal GPS module. The Kiwi, IIRC uses an different kind of GPS.